High-oil-gas-ratio oil well gas lift auxiliary machine pumping oil extraction device

Abstract

The utility model provides a high-oil-gas-ratio oil well gas lift auxiliary machine pumping oil extraction device, which belongs to the field of oil auxiliary extraction devices and comprises an oil tank, a gas lift component and a sealing component. A Christmas tree is arranged on one side of the oil tank; an oil pipe is mounted at the bottom of the The driving motor rotates to drive the gas compressor to conduct compression, air enters the gas compressor through the gas inlet pipe to form high-pressure gas, the high-pressure gas is conveyed into the casing pipe connected with the Christmas tree through the gas conveying pipe, the oil pipe is arranged in the casing pipe, and the oil sleeve annulus is formed between the casing pipe and the oil pipe. High-pressure gas enters the oil sleeve annulus, the gas lift valves are opened at the moment, the high-pressure gas enters the oil pipe to be in contact with and mixed with petroleum, so that the oil forms bubble flow, the gas lift valves are opened and the gas is increased in the rising process of the oil to become circular flow, then the circular flow is changed into mist flow mainly containing gas, petroleum exploitation is facilitated, and the exploitation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of oil auxiliary extraction devices, specifically an oil extraction device for a gas lift auxiliary machine for high oil-gas ratio oil wells. Background Technology

[0002] Oil extraction refers to the act of digging and extracting oil from areas where oil reserves exist. During oil extraction, oil and gas flow from the reservoir to the bottom of the well and then rise from the bottom to the wellhead. Oil plays a crucial role in the national economy. Compared to coal, oil has advantages such as higher energy density, easier transportation and storage, and less air pollution after combustion. Fuel oil refined from petroleum is the main fuel for transportation vehicles, power plant boilers, and various kilns in the metallurgical and building materials industries. Liquefied petroleum gas (LPG) and piped gas, made from petroleum, are high-quality fuels for urban residents. Currently, many oil fields in my country experience low single-well production, leading to a year-on-year increase in the number of regularly shut-in and intermittently shut-in wells. If conventional oil extraction methods are still used for these wells, laying oil pipelines and installing electrical circuits will increase oilfield production and maintenance costs. Furthermore, some oil wells are at higher extraction depths, resulting in insufficient lift and slow oil production efficiency, thus reducing the rate of oil extraction. Utility Model Content

[0003] The purpose of this invention is to provide a high oil-gas ratio well gas lift auxiliary pumping device to solve the problem mentioned in the background art that some oil wells have a high extraction depth, resulting in insufficient lifting force and slow oil production efficiency during the extraction process, which leads to a reduction in oil extraction speed.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an oil extraction device for a high oil-gas ratio well gas lift auxiliary machine, comprising an oil tank, a gas lift assembly, and a sealing assembly;

[0005] Among them: an oil production tree is provided on one side of the oil tank, and an oil pipe is installed at the bottom of the oil production tree;

[0006] The gas lift assembly includes a mounting base disposed on one side of the wellhead, a drive motor mounted on the surface of the mounting base, a gas compressor mounted on the output end of the drive motor, an inlet pipe connected to the top of the gas compressor, a gas delivery pipe mounted on the surface of the gas compressor, one end of the gas delivery pipe connected to one side of the wellhead, a sleeve fitted over the outside of the oil pipe, forming an annulus between the sleeve and the oil pipe, the sleeve communicating with the wellhead, and multiple gas lift valves fixedly mounted on the surface of the oil pipe.

[0007] The sealing assembly includes a sealing seat mounted on the surface of the tree, with the tubing inserted inside the sealing seat. The inner wall of the sealing seat has an installation groove, and a double-layer sealing ring is embedded inside the installation groove. The double-layer sealing ring is fitted onto the surface of the tubing.

[0008] As a preferred embodiment of this utility model: a control valve is fixedly installed on the surface of the gas pipeline, an oil vapor filter is installed on one side of the control valve, and a one-way valve is installed at the connection between the gas pipeline and the wellhead.

[0009] As a preferred embodiment of this utility model: the bottom of the oil sleeve annulus is filled with a packer, and a pressure sensor is installed at the bottom end of the oil pipe.

[0010] As a preferred embodiment of this utility model: a vent pipe is installed in parallel on the surface of the gas transmission pipe, and a discharge valve is installed in the middle of the vent pipe.

[0011] As a preferred embodiment of this utility model, pressure relief valves are installed on both sides of the top of the oil well tree.

[0012] As a preferred embodiment of this utility model: a delivery pipe is connected between the oil well tree and the oil tank, and the oil pipe is connected to the delivery pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) An installation base is installed on one side of the wellhead. A drive motor is installed on the surface of the installation base. The drive motor rotates to drive the gas compressor to compress the air. After the air enters the gas compressor through the air inlet pipe, it forms high-pressure gas. The high-pressure gas is transported to the casing connected to the wellhead through the gas delivery pipe. Since there is an oil pipe inside the casing, an oil-casing annulus is formed between the casing and the oil pipe. The high-pressure gas enters the oil-casing annulus. At this time, the gas lift valve opens and the high-pressure gas enters the oil pipe and mixes with the oil, so that the oil forms a bubble flow. As the oil rises, multiple gas lift valves open, the gas increases and becomes a circulation, and then the circulation becomes a mist flow dominated by gas, which facilitates the extraction of oil and improves the extraction efficiency.

[0015] (2) A sealing seat is installed on the surface of the wellhead through the provided sealing components. The oil pipe is inserted inside the sealing seat. At the same time, an installation groove is opened on the inner wall of the sealing seat. The double-layer sealing ring embedded in the installation groove is fitted on the surface of the oil pipe, so that the connection between the wellhead and the oil pipe is sealed, preventing the gas inside the gas pipeline from entering the wellhead and leaking from the oil pipe connection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the air lift assembly structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the sealing component structure of this utility model.

[0020] In the picture: 1. Oil tank; 2. Wellhead; 3. Oil pipeline;

[0021] 4. Air lift assembly; 41. Mounting base; 42. Drive motor; 43. Gas compressor; 44. Inlet pipe; 45. Gas delivery pipe; 46. Sleeve; 47. Oil sleeve annulus; 48. Air lift valve;

[0022] 5. Sealing assembly; 51. Sealing seat; 52. Mounting groove; 53. Double sealing ring;

[0023] 6. Control valve; 7. Oil vapor filter; 8. Check valve; 9. Packer; 10. Pressure sensor; 11. Drain pipe; 12. Discharge valve; 13. Pressure relief valve; 14. Delivery pipe. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Please see Figure 1 - Figure 4 A high oil-gas ratio oil well gas lift auxiliary machine oil extraction device includes: an oil tank 1, a gas lift assembly 4 and a sealing assembly 5;

[0026] Oil tank 1 is equipped with a tree 2 on one side, and an oil pipe 3 is installed at the bottom of the tree 2;

[0027] Please see Figure 1 , Figure 3 The gas lift assembly 4 includes a mounting base 41 disposed on one side of the tree 2. A drive motor 42 is mounted on the surface of the mounting base 41. A gas compressor 43 is mounted on the output end of the drive motor 42. An air inlet pipe 44 is connected to the top of the gas compressor 43. A gas delivery pipe 45 is mounted on the surface of the gas compressor 43. One end of the gas delivery pipe 45 is connected to one side of the tree 2. A sleeve 46 is fitted around the outside of the oil pipe 3. An oil sleeve annulus 47 is formed between the sleeve 46 and the oil pipe 3. The sleeve 46 is connected to the tree 2. Multiple gas lift valves 48 are fixedly mounted on the surface of the oil pipe 3.

[0028] In practical use: A mounting base 41 is installed on one side of the wellhead 2. A drive motor 42 is installed on the surface of the mounting base 41. The drive motor 42 rotates to drive the gas compressor 43 to compress air. Air enters the gas compressor 43 through the air inlet pipe 44 and forms high-pressure gas. The high-pressure gas is transported through the gas delivery pipe 45 to the casing 46 connected to the wellhead 2. Since there is an oil pipe 3 inside the casing 46, an oil-casing annulus 47 is formed between the casing 46 and the oil pipe 3. When the high-pressure gas enters the oil-casing annulus 47, the gas lift valve 48 opens. The high-pressure gas enters the oil pipe 3 and comes into contact with and mixes with the oil, causing the oil to form a bubble flow. As the oil rises, multiple gas lift valves 48 open, the gas increases and becomes a circulation, and then changes from circulation to a mist flow dominated by gas, which facilitates oil extraction and improves extraction efficiency.

[0029] Please see Figure 1 , Figure 4 The sealing assembly 5 includes a sealing seat 51 installed on the surface of the tree 2, an oil pipe 3 inserted inside the sealing seat 51, an installation groove 52 is provided on the inner wall of the sealing seat 51, a double sealing ring 53 is embedded inside the installation groove 52, and the double sealing ring 53 is fitted on the surface of the oil pipe 3.

[0030] In practical use: a sealing seat 51 is installed on the surface of the wellhead 2, and the oil pipe 3 is inserted inside the sealing seat 51. At the same time, an installation groove 52 is opened on the inner wall of the sealing seat 51. The double-layer sealing ring 53 embedded in the installation groove 52 is fitted onto the surface of the oil pipe 3, so that the connection between the wellhead 2 and the oil pipe 3 is sealed, preventing gas inside the gas pipeline 45 from entering the wellhead 2 and leaking from the connection of the oil pipe 3.

[0031] Please see Figure 1 A control valve 6 is fixedly installed on the surface of the gas pipeline 45. An oil vapor filter 7 is installed on one side of the control valve 6. A one-way valve 8 is installed at the connection between the gas pipeline 45 and the tree 2.

[0032] In practical use: A control valve 6 is installed on the surface of the gas pipeline 45. The gas pipeline 45 can be disconnected to deliver high-pressure gas into the casing 46 through the control valve 6. The gas passes through the oil vapor filter 7 to filter out oil vapor impurities. The one-way valve 8 at the connection between the gas pipeline 45 and the tree 2 can prevent the high-pressure gas from flowing back.

[0033] Please see Figure 1 , Figure 3 The bottom of the annulus 47 is filled with a packer 9, and a pressure sensor 10 is installed at the bottom of the tubing 3.

[0034] In practical use: A packer 9 is installed at the bottom of the annulus 47 to seal and prevent high-pressure gas leakage, while also preventing oil from entering the casing 46. The pressure sensor 10 at the bottom of the tubing 3 is used to detect the pressure of the oil reservoir, so as to control whether gas lift is needed for oil production based on the oil and gas pressure of the oil reservoir itself.

[0035] Please see Figure 3 An exhaust pipe 11 is installed in parallel on the surface of the gas pipeline 45, and an exhaust valve 12 is installed in the middle of the exhaust pipe 11.

[0036] In practical use: the vent pipe 11, which is installed in parallel on the surface of the gas pipeline 45, is used to release the gas in the gas pipeline 45 by opening the vent valve 12 when the gas compressor 43 is turned off.

[0037] Please see Figure 1 Pressure relief valves 13 are installed on both sides of the top of the oil well tree 2.

[0038] In practical use: the pressure relief valves 13 installed on both sides of the top of the wellhead 2 are used to release the gas contained in the high oil-gas ratio produced, so as to avoid excessive pressure inside the oil pipe 3.

[0039] Please see Figure 2 A delivery pipe 14 connects the oil well 2 and the oil tank 1, and the oil pipe 3 is connected to the delivery pipe 14.

[0040] In practical use: the oil well 2 and the oil tank 1 are connected by a delivery pipe 14, and the oil extracted by the oil pipe 3 is delivered to the inside of the oil tank 1 through the delivery pipe 14.

[0041] A mounting base 41 is installed on one side of the wellhead 2. A drive motor 42 is installed on the surface of the mounting base 41. The drive motor 42 rotates to drive the gas compressor 43 to compress air. Air enters the gas compressor 43 through the air inlet pipe 44 and forms high-pressure gas. The high-pressure gas is transported to the casing 46 connected to the wellhead 2 through the gas delivery pipe 45. Since there is an oil pipe 3 inside the casing 46, an oil-casing annulus 47 is formed between the casing 46 and the oil pipe 3. When the high-pressure gas enters the oil-casing annulus 47, the gas lift valve 48 opens. The high-pressure gas enters the oil pipe 3 and comes into contact with and mixes with the oil, causing the oil to form a bubble flow. As the oil rises, multiple gas lift valves 48 open, the gas increases and becomes a circulation, and then the circulation becomes a mist flow dominated by gas, which facilitates oil extraction and improves extraction efficiency.

[0042] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high oil-gas ratio oil well gas lift assisted machine oil extraction device, characterized in that, Include: Oil tank (1), one side of the oil tank (1) is provided with Christmas tree (2), the bottom of the Christmas tree (2) is provided with oil pipe (3); Gas lift assembly (4), the installation seat (41) is arranged on one side of the Christmas tree (2), the driving motor (42) is arranged on the surface of the installation seat (41), the output end of the driving motor (42) is provided with gas compressor (43), the top of the gas compressor (43) is connected with air inlet pipe (44), the surface of the gas compressor (43) is provided with gas pipe (45), one end of the gas pipe (45) is connected with one side of the Christmas tree (2), the outer part of the oil pipe (3) is provided with casing (46), the casing (46) and the oil pipe (3) form oil jacket annulus (47), the casing (46) is communicated with the Christmas tree (2), the surface of the oil pipe (3) is fixedly provided with a plurality of gas lift valves (48); Sealing assembly (5), the sealing seat (51) is arranged on the surface of the Christmas tree (2), the oil pipe (3) penetrates in the sealing seat (51), the inner wall of the sealing seat (51) is provided with installation groove (52), the double layer sealing ring (53) is embedded in the installation groove (52), the double layer sealing ring (53) is arranged on the surface of the oil pipe (3).

2. The high gas-oil ratio oil well gas lift assisted machine oil extraction device according to claim 1, characterized in that: The surface of the gas pipe (45) is fixedly provided with control valve (6), one side of the control valve (6) is provided with oil vapor filter (7), the one-way valve (8) is arranged on the connection between the gas pipe (45) and the Christmas tree (2).

3. The high gas-oil ratio oil well gas lift assisted machine oil extraction device according to claim 1, characterized in that: The bottom of the oil jacket annulus (47) is filled with packer (9), the bottom end of the oil pipe (3) is provided with pressure sensor (10).

4. The high gas-oil ratio oil well gas lift assisted machine oil extraction device according to claim 1, characterized in that: The surface of the gas pipe (45) is provided with evacuation pipe (11) in parallel, the discharge valve (12) is arranged on the middle part of the evacuation pipe (11).

5. The high gas-oil ratio oil well gas lift assisted mechanical oil extraction device according to claim 1, characterized in that: The top of the Christmas tree (2) is provided with pressure relief valve (13) on both sides.

6. The high gas-oil ratio oil well gas lift assisted mechanical oil extraction device according to claim 1, characterized in that: The Christmas tree (2) and the oil tank (1) are connected with conveying pipe (14), the oil pipe (3) is communicated with the conveying pipe (14).

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